December in Portuguese: Dezembro, Explained

Your coworker in Recife sends a message on a random Tuesday morning, the kind of message that stops you mid-scroll: "Já caiu o décimo terceiro, vou pra praia na ceia esse ano." You catch "praia," beach, and something about dinner, "ceia," but the first part stops you cold. Décimo terceiro. Tenth? Thirteenth? You have no idea what "caiu," fell, and you definitely don't know why money falling and a beach dinner belong in the same sentence. A few days later the same coworker signs off an email with "Boas Festas!" and you nod along like you understood, because that's usually easier than admitting you didn't. Then the date on your own calendar rolls over into the last month of the year, and you finally type the question you should have typed a week earlier: how do you say "December" in Portuguese? The answer comes back in half a second, one word, "dezembro." That word is the easiest part of this whole month.

If you clicked through chasing exactly that one-word answer, you're about to get it in the next few paragraphs. But a single word never explains why a Brazilian coworker is suddenly talking about money that "fell" out of nowhere, why a Christmas dinner in Recife happens at midnight in flip-flops instead of at noon in a sweater, or why "the school year is ending" makes more sense in December than it does in June. Dezembro carries more of Brazil's calendar weight than almost any other month on the list, and once you understand what's actually packed inside it, that one word starts meaning something real instead of just translating something small. Let's start with the word itself, then build outward into everything hanging off it.

The Quick Answer: "Dezembro"

December in Portuguese is "dezembro." It's a masculine noun, and exactly like every other month name in Portuguese, it stays lowercase in the middle of a sentence. English capitalizes "December" out of pure habit. Portuguese just treats the word as ordinary, the same grammatical category as "week" or "table," so the only time you'll see a capital D on it is when "Dezembro" happens to open a sentence, and even then the capital belongs to that position, not to the month itself.

Say it out loud and it lands close to "deh-ZEM-broo." Three syllables, de-ZEM-bro, with the stress falling hard on the middle one, "ZEM." That middle syllable really is the whole word: nail the stress there and the rest of it falls into place almost on its own. If you ever need to shorten it, on a form or a calendar entry, the standard abbreviation is "dez.", with a period, the same habit English follows when it shortens "December" down to "Dec."

Here's the word laid out plainly before anything else gets layered on top of it.

Both Cambridge's English-Portuguese dictionary and PONS' English-Portuguese dictionary confirm "dezembro" as the direct translation, and unlike a handful of Portuguese words, there's no regional split to keep track of here. Brazil and Portugal spell it the same, stress it the same, and abbreviate it the same way. Practice Portuguese's guide to the months of the year includes native audio for "dezembro" alongside the rest of the calendar, worth a listen if the phonetic spelling alone doesn't fully make the stress click for you.

Reading "dezembro" off a page is one thing. Saying "estamos em dezembro" out loud, at real speed, without freezing on that middle syllable, is a different skill entirely, and it's exactly the gap Comigo's spoken quiz is built to close. You say the sentence into your phone, and you find out immediately whether what came out of your mouth actually matched what you meant to say.

Where "Dezembro" Comes From

The word looks complicated, but the history behind it is almost embarrassingly simple: "dezembro" means "the tenth month," and it hasn't actually been the tenth month for over two thousand years.

Etymonline's entry on "December" traces the word straight back to the Latin "decem," meaning "ten," combined with the same ordinal-month suffix pattern that produced "September," "October," and "November." Wiktionary's entry on "December" confirms the same root, "decem" plus "-ber," an ending etymologists still debate the exact origin of, but one that shows up consistently across all four of these late-year names. The original Roman calendar, the one in use before Julius Caesar's later reform, started its year in March, not January. Count forward from there: March is the first month, April the second, May the third, and so on down the line, until December, ten months later, genuinely was the tenth month on that calendar. Wikipedia's entry on December as a Roman month confirms this origin directly, noting that the month kept its "tenth month" name even after Rome eventually shifted the calendar to start in January, which is exactly why the name and the actual position on the calendar have been mismatched ever since.

That mismatch is the same one hiding behind September (seven), October (eight), and November (nine). If you've read the february post or the march post in this series, you've already run into a version of this story, since both of those months carry their own tangled Roman backstories. December's case is arguably the cleanest of the bunch, though, because ten sits exactly two months off from twelve, the same fixed two-month gap you'll find behind outubro as well. Nobody ever went back and renamed the months once the calendar shifted. The numbers just quietly stopped lining up with reality, and two thousand years later you're still technically saying "the tenth month" every time you mean the twelfth.

None of this is required knowledge to use the word correctly tomorrow morning. It's the kind of trivia that comes up once you start wondering whether Portuguese is hard to learn compared to other languages, and the honest answer is that quirks like this one are more charming than difficult, once you actually know the story sitting behind them instead of just memorizing the word cold.

Saying "In December": The Grammar

"In December" is "em dezembro." No article slides in front of it, the same rule that covers every single month in Portuguese. You don't say "no dezembro." You just say "em dezembro," plain, exactly the way you would for fevereiro or any other month on the calendar. That's actually a small kindness Portuguese does you, because if you've already worked through the days of the week in Portuguese, you know a day like Monday needs an article, "na segunda-feira." Months skip that step completely.

Sometimes, though, you want a fuller phrase than just the bare month, something closer to "the month of December" in English. Portuguese builds that with "o mês de dezembro," or, when you need "in" attached to it, "no mês de dezembro." The article shows up here because it's attached to "mês," month, not directly to "dezembro" itself. "Vou viajar no mês de dezembro" and "vou viajar em dezembro" mean the same thing, but the first one sounds a touch more deliberate and formal, the kind of phrasing you'd expect in a work memo rather than a text to a friend.

There's one more small wrinkle worth knowing, and it's minor enough that you can file it away without worrying about it constantly. When "dezembro" becomes the actual grammatical subject of a sentence, especially paired with a word like "passado," last, Portuguese sometimes lets an article slip in front of it after all. "Dezembro passado foi quente," last December was hot, works perfectly fine with no article at all. "O dezembro passado foi quente" also works, and sounds slightly more pointed, closer to "that particular December," as if you're both picturing the exact same one. Neither version is wrong. The plain version without "o" is the safer default for almost everything you'll want to say day to day, and the version with the article is a flourish you can pick up later once the plain pattern feels automatic in your mouth.

Here are a handful of natural sentences using the pattern, mixing a casual register with a more formal one so you can see the structure hold up either way.

Notice that fourth example leans on a bit of grammar you may already know from numbers in Portuguese. Once you can count comfortably, stacking a year onto a month, like "dezembro de 2001," stops feeling intimidating and just becomes another small, mechanical piece you bolt onto a sentence you already know how to build.

Dates in Dezembro: Ordinals and Cardinals

Scheduling anything in dezembro means running into the same rule that governs every month in Portuguese: ordinal numbers, first, second, third, only get used once, for the very first day. Everything else switches over to a plain cardinal number, and the switch happens right after day one, no exceptions and no gray area.

So "December 1st" is "primeiro de dezembro," built on "primeiro," the ordinal word for first. "December 2nd" is "dois de dezembro," just the plain number two, never "segundo de dezembro." Keep counting up and the pattern holds all the way through the month: "December 10th" is "dez de dezembro," "December 20th" is "vinte de dezembro," and by the time you reach the dates that matter most on the Brazilian calendar, the pattern hasn't budged at all. "December 24th" is "vinte e quatro de dezembro," "December 25th" is "vinte e cinco de dezembro," and "December 31st," the very last day of the year, is "trinta e um de dezembro," never "trigésimo primeiro de dezembro." Rio and Learn's guide to ordinal numbers in Portuguese confirms this exact rule across the entire calendar: ordinals almost never survive past the first day of any given month.

Here's a spread of dates through dezembro so you can watch the pattern stay steady, including the three dates that carry the most weight later in this post.

Those last three rows aren't random picks. December 20th is a date Brazilian workers watch closely for reasons covered a bit further down, and the 24th and 25th together anchor the single biggest family gathering of the year. Rio and Learn's broader guide to dates in Portuguese covers the same "day de month" structure with more practice examples if you want to drill the pattern further before moving on.

One habit worth locking in before you write a single date down: Portuguese writes numeric dates in day, month, year order, not month, day, year the way American English defaults to. Christmas Day, written numerically, is 25/12, never 12/25, and New Year's Eve is 31/12, never 12/31. Elon.io's guide to dates and time in Brazilian Portuguese confirms this day-month-year order as standard across both Brazil and Portugal, the same kind of default-flip you'll bump into again the moment you check what time it is in Portuguese and realize the 24-hour clock is the norm there too, not the exception.

Dezembro in Portugal vs. Dezembro in Brazil

Here's the assumption that trips up nearly every English speaker, and it's the exact one buried inside your coworker's beach dinner plan. In English, "December" comes preloaded with a picture: short days, cold air, maybe snow, definitely a coat by the door. That picture only describes half of the Portuguese-speaking world.

Portugal sits in the Northern Hemisphere, roughly level with the rest of Western Europe, so dezembro there really is deep winter, "inverno." Days get short fast, skies turn gray for weeks at a stretch, and daytime temperatures in Lisbon rarely climb out of the low teens Celsius, colder still further north and up in the mountains around places like Serra da Estrela.

Brazil flips that completely, because it sits below the equator, where the seasons run exactly backwards from what English speakers instinctively expect. Dezembro in Brazil isn't the start of winter. It's the start of full summer, "verão," the exact moment beaches fill up on weekends, air conditioners start running around the clock, and daytime highs in cities like Rio de Janeiro and Salvador push comfortably past 30 degrees Celsius. That's the real backdrop behind your coworker's beach dinner plan. Nobody was exaggerating. Christmas Eve in Recife or Rio genuinely feels like a beach holiday, because weather-wise, that's exactly what it is.

Portugal and Brazil use the exact same four season words, "primavera," "verão," "outono," and "inverno." What changes is only which months each season covers, since the Southern Hemisphere runs six months out of step with the Northern one, a straightforward consequence of the Earth's axial tilt.

Look at the "dezembro" row hiding inside each column and the whole puzzle solves itself. In Portugal, dezembro sits right at the front edge of inverno, one of the coldest stretches of the year. In Brazil, it sits right at the front edge of verão, one of the hottest. Same word, same spelling, same three syllables, completely opposite weather, depending entirely on which side of the equator you're picturing when you hear it said out loud. Wikipedia's overview of the Portuguese language puts the number of speakers across Brazil, Portugal, and several African countries at well over 250 million, which means dezembro genuinely marks the start of two different seasons for tens of millions of people at the exact same moment on the calendar.

It's a small detail, but it's the one that keeps you from wishing a friend in Rio "a cozy, warm December," and getting back a confused laugh, or from packing a coat for a December trip to a country where a swimsuit would have served you far better.

What Actually Fills Dezembro in Brazil: The Festive Stretch

Knowing the word "dezembro" is one thing. Knowing what actually happens inside it, for the people living through it, is a different and far more useful kind of fluency, and in Brazil, two nights dominate the whole month more than anything else.

Ceia de Natal: Christmas at Midnight, in Shorts

The first is Christmas Eve, "véspera de Natal," and specifically the family dinner attached to it, "Ceia de Natal." Unlike a lot of Northern Hemisphere Christmases built around an early dinner or a big midday meal, the Brazilian "ceia" traditionally starts late, often around 10pm, and runs past midnight, so the meal itself doubles as the moment the clock actually rolls over into December 25th. Rio and Learn's guide to Christmas in Brazil describes a typical table: turkey or ham, rice studded with raisins, farofa, and plenty of tropical food standing in for the heavier, cold-weather dishes you might expect from a European or American Christmas dinner. "Papai Noel," Santa Claus, still shows up in the decorations, full red suit and all, even though the weather outside makes that suit look almost comically out of place. iHeartBrazil's overview of Christmas in Brazil points out this exact mismatch directly: Brazilian Christmas imagery borrows heavily from a snowy Northern Hemisphere aesthetic, sleighs and pine trees included, layered right on top of a holiday actually unfolding in the middle of a heat wave.

Wishing someone a good Christmas by translator app is easy enough. Saying "Feliz Natal" out loud with the right rhythm, in a voice note back to your own coworker, is the part Comigo's spoken practice actually trains, one real sentence at a time instead of one silent tap.

Réveillon: White Clothes, Fireworks, and Seven Waves

The second big night is "Réveillon," New Year's Eve, on the 31st, and it might be the single most photographed night on the entire Brazilian calendar. Rio's Copacabana beach hosts one of the largest New Year's celebrations on the planet, with fireworks bursting over the water and crowds stretching for kilometers along the sand. Wikipedia's entry on New Year's Eve in Copacabana describes the scale of it: millions of people gathering on the sand itself, most of them dressed head to toe in white, a color tradition tied to peace and good luck heading into the new year. A popular custom that comes with it involves jumping seven ocean waves at midnight, making one wish with each jump, a ritual with roots in Afro-Brazilian religious tradition connected to Yemanjá, goddess of the sea. Whether or not any given person on that beach actually believes in the ritual, plenty do it anyway, the same casual way plenty of people knock on wood without believing wood has any real power in it at all.

This post only has room for the overview, since both nights deserve, and already have, their own dedicated breakdowns on this site. If you want the full phrase list for wishing someone a good Christmas, merry Christmas in Portuguese covers "Feliz Natal" and the phrases built around it in detail. If you want the New Year's side, happy new year in Portuguese does the same for "Feliz Ano Novo" and the "Boas Festas" greeting your coworker signed off with, the catch-all phrase Brazilians use to cover the entire festive stretch at once rather than picking Christmas or New Year's specifically. And if dezembro has you thinking about the rest of the calendar too, months in Portuguese lays out all twelve names side by side in one place.

The Décimo Terceiro: Why Brazilians Talk About Money in Dezembro

Here's the piece from the opening message that doesn't come from any calendar or dictionary at all: "décimo terceiro." Literally "thirteenth," and it refers to the "décimo terceiro salário," the thirteenth salary, a full extra month's pay that Brazilian law requires employers to give every registered employee, stacked on top of their normal twelve monthly paychecks.

It isn't a bonus in the loose, optional, good-mood sense English speakers might picture when they hear "extra pay." It's mandatory, written directly into Brazilian labor law, and it arrives in two separate installments. Europartner's guide to payroll in Brazil and the 13th salary lays out the schedule plainly: the first half has to be paid by November 30th, and the second half by December 20th, right in the thick of the same festive stretch covered above. Garoa's explainer on the 13th salary in Brazil frames the reasoning behind the law directly, it exists specifically to put extra cash in workers' hands heading into the most expensive stretch of the year, gifts, travel, the "ceia," the white outfit for Réveillon. Employsome's glossary entry on "décimo terceiro salário" adds that the amount owed is calculated based on months actually worked that year, so someone who started a job in July gets roughly half a thirteenth salary, not the full amount, prorated the same way vacation pay often is elsewhere.

That second installment landing right around December 20th is exactly why dezembro feels different financially for a huge share of Brazilian workers. Rent and bills stay the same size they always were, but there's suddenly an extra chunk of income sitting in the account, which is why "Já caiu o décimo terceiro?", has the thirteenth salary landed yet, becomes such a common question among coworkers and friends starting in late November and running right through the third week of December. A few more phrases worth knowing if this exact topic ever comes up in conversation, which in Brazil during dezembro, it eventually will.

That last one leans on a phrase worth knowing on its own. If you've already worked through how to say thank you in Portuguese, "obrigado" should already feel automatic, and pairing it with something concrete like "pelo décimo" is exactly the kind of small, specific gratitude that lands better than a generic thanks. The fourth row, "veio bem gordo," literally "came fat," is a casual, common way to say a payment turned out bigger than expected. It shows up in décimo terceiro conversations constantly, since the final amount depends on salary and months worked, and some years genuinely do come out fatter than others.

Dezembro Also Means School's Out

There's a second structural fact hiding inside dezembro that never shows up in a plain vocabulary list, and it connects directly back to the seasonal flip covered earlier. Brazil's school year, "ano letivo," runs roughly from February through the middle of December, not September through June the way it does in the United States. Wise's overview of the Brazilian education system and Beevago's overview of school holidays in Brazil both confirm this shape: classes wrap up around the middle of dezembro, and the long break, "férias de verão," summer vacation, runs from there into the first weeks of the following February, lining up neatly with the hottest stretch of the Brazilian year rather than sitting in the middle of it the way an American summer break does.

That makes dezembro the Brazilian equivalent of an American June: report cards, final exams, "formatura" ceremonies for students finishing a stage of school, and parents making summer plans while their kids count down the last handful of school days. If you've already read the february in Portuguese post in this series, you already know the other half of this exact story: February is when Brazilian kids head back to school, right in the middle of their own summer. Dezembro is where that same school year quietly closes out six months out of step with the calendar most English speakers grew up assuming was universal.

It's a small scheduling fact, but it explains why a Brazilian parent might mention "as férias" and "o Natal" in the same breath during dezembro without missing a beat. For them, the two are already tangled together in the same handful of weeks, not separated by half a year the way they tend to be in the Northern Hemisphere.

Getting the Pronunciation Right

You've seen "deh-ZEM-broo" a few times already, so it's worth breaking down exactly why it sounds that way before you say it out loud to anyone.

"Dezembro" splits into three syllables: de-ZEM-bro. The stress lands hard on the middle one, "ZEM," and that "e" comes out close to the vowel in the English word "them," not the long "ee" sound an English speaker might reach for out of habit when they see the letter "e" sitting on its own. The first syllable, "de," stays short and light, almost swallowed compared to the punch on "ZEM," and the final "bro" trails off quickly, the "o" landing closer to "oo" than to the open "oh" sound English speakers default to.

Brazilian and European Portuguese handle the word almost identically, which is rare enough among month names to be worth noting on its own. Where they drift apart slightly is in how tightly each accent compresses the unstressed vowels around that stressed middle syllable. European Portuguese tends to clip the surrounding sounds more aggressively in fast, casual speech, so "dezembro" can come out sounding closer to "dzembro" in a quick sentence, the first vowel nearly disappearing. Brazilian Portuguese generally keeps a touch more air around each syllable, giving you a slightly clearer "de" at the front even at conversational speed. Either way, the stressed "ZEM" stays the anchor, the one part of the word worth nailing first if you only have the attention span to fix one thing.

Practice Portuguese's guide to the months of the year pairs written spelling with native audio for the full set of months, "dezembro" included, and hearing it said back to back with "novembro" and "janeiro" makes the rhythm click faster than reading a phonetic breakdown ever will on its own. Migaku's rundown of the Portuguese months covers the same ground from a slightly different angle if the first explanation doesn't fully land. If you've already spent time on greetings, like how are you in Portuguese or how to say hello in Portuguese, you've likely run into this same front-loaded stress habit before. Portuguese leans on stress to carry meaning more heavily than English typically does, which is exactly why getting the emphasis in the right spot matters more here than chasing a textbook-perfect vowel on every syllable.

Common Mistakes English Speakers Make With "Dezembro"

A handful of errors show up constantly around this word, and knowing them ahead of time means you won't be the one making them next.

The first is capitalizing "Dezembro" out of pure English habit. Every month in Portuguese stays lowercase mid-sentence, a rule Elon.io's capitalization guide for Brazilian Portuguese lays out clearly, and "dezembro" follows it exactly as strictly as "janeiro" or "julho" do. Only a sentence-opening position earns the capital letter, and that's about position on the page, not about meaning.

The second is reaching for "no dezembro" instead of "em dezembro." Months skip the article entirely after "em," the same pattern covered earlier in this post, and slipping one in front of it sounds off to a native ear even though the meaning still comes through fine.

The third is reaching for an ordinal number anywhere past the first day of the month, saying "trigésimo primeiro de dezembro" for December 31st instead of the correct "trinta e um de dezembro." Only "primeiro" survives as an ordinal in Portuguese dates. Every single day after that switches to a plain cardinal number, no exceptions and no shortcuts.

The fourth, and probably the biggest wrong assumption tied to this specific month, is picturing Brazil as cold, snowy, or quiet in dezembro the way parts of the Northern Hemisphere are. It runs exactly opposite on every count: dezembro in Brazil means peak beach season, packed calendars, extra cash from the décimo terceiro, and two of the loudest, most crowded nights of the entire year back to back.

The Rest of the Calendar Vocabulary Nearby

Dezembro rarely shows up alone in a real conversation, so it's worth grabbing a small cluster of related words here instead of hunting them down separately somewhere else later.

"Feriado" and "festa" both come up constantly around dezembro specifically, since the month is stacked with both, a public holiday on the 25th, another one on January 1st that dezembro leads straight into, and enough "festas" in between to fill every remaining weekend. Since you'll eventually want the whole calendar anchored in your head, not just one month sitting inside it, here's the complete list, all twelve names, lowercase exactly the way you'd type them mid-sentence.

If you want the deeper story behind any of the others, fevereiro has its own strange Roman purification backstory, março connects to a completely different Roman god than most people expect, and outubro shares dezembro's exact "off by two" naming glitch, just two months earlier in the same chain. And once you can combine a day, a month, and a year confidently, the way you'd need to for a full date like "vinte e cinco de dezembro de 2026," you've effectively unlocked the year in Portuguese as a whole, not just the one month that happens to close it out.

Frequently Asked Questions

Is "December" capitalized in Portuguese? No, not mid-sentence. Portuguese treats month names as ordinary common nouns, so "dezembro" stays lowercase everywhere except when it happens to open a sentence, and even then the capital comes from that position, not from being a month.

Is "dezembro" masculine or feminine? Masculine. All twelve months in Portuguese are masculine nouns, which mostly matters if you're pairing one with an adjective, though in everyday speech you'll rarely need to, since months usually sit alone right after "em" or "de."

How do you say December 25th in Portuguese? "Vinte e cinco de dezembro," using the plain cardinal number twenty five, never an ordinal. Only December 1st uses an ordinal, "primeiro de dezembro." Every date after that, the 25th included, uses a cardinal number, the same pattern Rio and Learn's ordinal numbers guide covers across the whole calendar.

What is the "décimo terceiro" in one line? It's the thirteenth salary, a mandatory extra month's pay Brazilian law requires employers to give every registered worker, paid out in two installments by November 30th and December 20th, right before the festive season hits its peak.

When does Réveillon happen? On the night of December 31st, New Year's Eve, with the biggest public celebrations, Rio's Copacabana beach among them, running from evening fireworks straight through midnight and beyond.

Is Christmas in December warm in Brazil? Yes. Brazil sits in the Southern Hemisphere, so dezembro falls at the start of full summer there, not winter. The Christmas Eve dinner and the Santa Claus imagery both happen against a backdrop of heat, beaches, and short sleeves, not snow, coats, or fireplaces.

If you're curious what the whole learning process actually looks like day to day, mistakes and all, how I learned Portuguese walks through it in more practical detail than any single vocabulary page ever could.

Back to That Message

Go back to your coworker's text: "Já caiu o décimo terceiro, vou pra praia na ceia esse ano." You know now that a mandatory chunk of extra salary just landed in their account, that "ceia" means the Christmas Eve dinner happening late into the night, and that spending part of that night at the beach on December 24th isn't a strange choice at all. It's just what a Brazilian summer Christmas actually looks like. "Boas Festas" wasn't a mystery either, once you know it. It's the season's catch-all greeting, covering everything from Christmas through Réveillon in one warm phrase, good right up through the last "trinta e um de dezembro" of the year.

You also know the one word that started this whole search, "dezembro," lowercase, masculine, stressed hard on that middle syllable, deh-ZEM-broo. You know how to date something inside it, how to talk about the money that lands mid-month, and why the season on the other end of your coworker's message runs exactly opposite to whatever dezembro usually looks like where you live. Typing all of that back correctly is one thing. Saying "boas festas, aproveita a praia na ceia" out loud, at a natural pace, without stumbling over the stress, is the part that turns something you read into something you actually own, and that's exactly the kind of practice Comigo is built to give you, one real spoken sentence at a time.